/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraEmitterViewModel.h
Gets a delegate which is called when this emitters parent is removed.
[FOnParentRemoved](API\Plugins\NiagaraEditor\ViewModels\FNiagaraEmitterViewModel\FOnParentRemoved) & OnParentRemoved()